Loading image data from DB

[Devin Asay]

I know this can be done, but it's got me stumped. Nothing conclusive  
from archives.

I want to store image data in a  mysql database and then show it in  
an image object in Rev. I successfully loaded an image into a field  
of type longblob. I know the data is there and that it's valid.

This is what I tried to load the image data:

global connID -- my connection id

on mouseUp
   if connID is empty then
     answer "You need to connect to the database first."
     exit to top
   end if
   put word 2 of the selectedline of fld "linenumbers" into tEntryNum
   put "select illustration from vocablist where item_index = " &  
tEntryNum into tQuery
   put revDataFromQuery(,,connID,tQuery) into tData
   set the imagedata of img "testImg" to tData
end mouseUp

The query ends up something like this:

select illustration from vocablist where item_index = 1290

All I ever get in the tData variable is four random characters; ÿØÿà

I know the image data in the database table is valid because I can  
set up an automatic query in the Database Query Builder, then set the  
image object to automatically load that data, and it works. I've  
tried to find the scripting in the Database Query Builder stack that  
does this, but no luck.

Has anyone successfully done this who can share the secret to making  
it work?

Thanks,

Devin

Devin Asay
Humanities Technology and Research Support Center
Brigham Young University